Type-writer.



BETTIE LOU GARY (NOW BY MARRIAGE BETTIE LOU BLOODWORTH).

TYPE WRITER.

APPLICATIGE YILED JAILZ, 1909.

Patented Feb. 8, 1910.

i .m. w e m d UNITED STIXTES OFFICE.

BETTIE LOU CARY (NOW BY MARRIAGE BETTIE LOU BLOODWORTH), O F MACON,-

TYPE-WRITER.

Specification of Letters Patent.

To all whom it may concern:

citizen of the United States, and resident of Macon, 1n the-county ofBibb and State of Georgia, have invented certain new and use;

ful Improvements in'lypc-lVriters, of which the'following is aspecification.

This invention relates to typewriters, and particularly to the platenrelease mechanism.

It consists in novel means for holding the mechanism in releasedposition.

The rotary platen of typewriters is ordil narily provided at its endwith a space wheel operated by ratchet mechanism from the s ace bar.There is a releasable connection etween the space wheel and the platenwhich is sometimes 0 erated by a longitudinally movable sha t enteringthe end of the wheel and the platen. This release is operated by handand the present invention embodies simple and convenient means forretaining said mechanism in released position when it is desired to movethe platen without regard to the space wheel. This free movement isoften necessary in'filling in blanks and during that work itis'desirable that the release be made permanent.

The novel features of the invention will be apparent from the followingdescription taken in connection with the accompanying drawing.

In the drawingz-Figure 1 is a bottom plan View of a portion ofthecarriage and platen of a typewriter showing my invention appliedthereto; Fig. 2 is a side view of the mechanism shown in Fig. 1; andFig. 3 is a perspective View of my spring catch which retains themechanism in released osition.

In Fig. 1 I have shown-a portion of the carriage frame of a typewritermade up of the side bars 1 and 2 and the end bar 3. A rotary platen 4 ofusual construction is mounted in this frame and carr at i end the spacewheel 5 having ratchet teeth on its surface adapted to be engaged by apawl operated by. the space bar, not shown. As will be understood bythose skilled in the art, there is within the cylindrical platen 4mechanism releasably connecting it with the space wheel 5, and thismechanism is operated by the longitudinally movable shaft 6 whichcarries on its outer end the thumb wheel 7. When the shaft 6 is in theposi- 'tion shown in Fig.- 1 the releasable mechanative position so thatthe platen 4; may be moved without regard. to the morement of the spacewheel 5. The above described construction is broadly old and thereforefurther illustration and description of it is unnecessary. My inventionconsists in novel means for holding the shaft 6 in the position shown inFig. 2, where the platen is released from the space wheel. This meansembodies a catch adapted to engage a shoulder 8 upon a part 9 secured tothe shaft 6, and it will be observed that there is an inclined surface10 upon the side of this shoulder nextto the carriage whereby the springcatch which I use. will automatically ride. up over the top of theshoulder when the shaft is moved into the position shown in Fig. 2. Theshoulder S is circular in form extending all the way around the shaft.The catch which I use embo ies flat strip of spring metal 11 which isrigidly secured to the cross pick. 3 of the frame at one end by a screw12. Year the othe; end of this fiat strip there is a slot l3 thoughwhich loosely passes a screw. H- which guides the catch, but does notinterfere wit: its vertical movement. At the free end of ie strip 11there is a transverse car 15 made semicylindrical in shape and carryingat its outer end a vertical flange or catch 16. Near the free end of thestrip and secured to the edge thereof at right angles is an arm 17car-lying at its top a thumb piece 18.

It will be apparent from the structure above described that when theshaft 6 is movcdto the left in Fig. 1 so as to release the platen, thespring catch 16 will ride up over the inclined surface 10 and will engage the lug 8. the plate ll bending for this purpose. My catchtherefore will auto matically hold the mechanism in released positionpermitting free movement of the platen as long as desired. The parts ofthe mechanism may be returned to their normal position with the platenand space wheel 7 Patented Feb. 8,1910. Application filed January2.1909. Serial No. 470,491.

B t kn u t I B L C 5 ism within the platen 4 secures that platen e 1 own111 ETTIE any, a

not shown, on the interior of the platen. The semi-cylindrical shape ofthe part 15 is for the purpose of fitting over the semicylindricalbearing for the platen shaft as it exists in some machines. 4 f

Having thus described the invention, what is claimed is: 1. In atypemitin .machine, the combination with a. revolu 1e platen and a linespace wheel therefor, ofa frame upon which said platen is mounted,mechanism for releasing the platen from the space wheel including a ion'tudinally movable operating shaft, a ringike stop on said shaft havingits front surface inclined, and aspring catch on the frame adapted toride over and engage said stop when the shaft is in released position.

2. In a typcwriting machine, the combination with a revoluble platen anda line space wheel therefor, of a frame upon which said platen ismounted, mechanism for releasing the platen from the space Wheelincluding a longitudinally movable operating shaft, a ring like stop onsaid shaft having its front surface inclined, a catch including a springsection lying against the end piece of the frame and secured thereto atone end, and a projecting edge at the other end of said section adaptedto ride over and engage said stop.

3. In a typewriting machine, the combif nation with a revoluble platenand a line space wheel therefor, of a frame upon which said platen ismounted, mechanism for releasing the platen from the line space Wheel,:1 spring plate extending longitudinally of the end section of the frameand line space wheel therefor, platen release mechanism including alongitudinally moi'r' able shaft, a spring plate lying against the undersurface of an end crosspiece of the frame and rigidly secured thereto atone" end, a catch carried by the free end of said plate for engaging andholding the shaft of the platen release and normally making suchengagement, and an operating finger secured to the free end of the plateand extending to the top of the frame for releasing said catch.

5'. A retaining device for platen release mechanism of typewritersembodying-a flat strip of spring metal having means for securing ittothe machine and provided at one end with a lateral extension. a catch onthe end of said extension at right angles thereto and an arm attached atright angles to said plate at one edge adjacent said extension carryinga thumb piece on its end.

In testimony whereof I aiiix my signature in presence of two witnesses.V

BETTIE LOU CARY.

W'itnesses:

J. H. DENsON, W. R. Roonns, Jr.

